Prospects and problems of dense oxygen permeable membranes

被引：161

作者：

Hendriksen, PV ^{[1
]}

Larsen, PH

Mogensen, M

Poulsen, FW

Wiik, K

机构：

[1] Riso Natl Lab, Mat Res Dept, DK-4000 Roskilde, Denmark

[2] Norwegian Univ Sci & Technol, Dept Inorgan Chem, N-7034 Trondheim, Norway

来源：

CATALYSIS TODAY | 2000年 / 56卷 / 1-3期

关键词：

permeable membrane; synthesis gas; conducting ceramics; oxygen permeable membranes; mixed conducting ceramics;

D O I：

10.1016/S0920-5861(99)00286-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The prospects of using mixed ionic/electronic conducting ceramics for syngas production in a catalytic membrane reactor are analysed. Problems relating to limited thermodynamic stability and poor dimensional stability of candidate materials are addressed, The consequences for these problems, of flux improving measures like minimization of membrane thickness and minimization of the losses due to oxygen exchange over the membrane surfaces, are discussed. The analysis is conducted on two candidate materials: La0.6Sr0.4Co0.2Fe0.8O3-delta and SrFeCo0.5Ox. Finally. experimental investigations of the dimensional stability of the latter material under reducing conditions are reported. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：283 / 295

页数：13

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